chore(package): update nyc to version 14.1.0

Closes #8

Author: greenkeeper[bot]

package.json

@@ -28,7 +28,7 @@
     "ava": "1.0.1",
     "coveralls": "^3.0.2",
     "husky": "^1.2.0",
-    "nyc": "^13.1.0",
+    "nyc": "^14.1.0",
     "standard-version": "^5.0.0",
     "xo": "^0.23.0"
   },